Radek Tkaczyk

provide request in context transforms

3

### Goal Add request parameter to `GTransform` ### Rationale To be able to decorate a service with an access log, as advertised in the docs. See [LoggingTransform](https://github.com/rtkaczyk/zio-grpc/blob/a7056996e26ffc5d561b25c2f38a17e82dd1db47/examples/fullapp/server/src/main/scala/LoggingTransform.scala) for an example.